Diagnostic Procedure

CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to "COMPONENT INSPECTION " .

OK or NG
1. OK: GO TO 2.
2. NG: Replace crankshaft position sensor (POS).
CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to "COMPONENT INSPECTION " .

OK or NG
1. OK: GO TO 3.
2. NG: Replace.
CHECK CAMSHAFT (INTAKE)
Visually check for chipped signal plate at camshaft.

Fig 1: Checking Chipped Signal Plate At Camshaft
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 4.
2. NG: Replace camshaft.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT " .

For Wiring Diagram, Refer to Wiring Diagram CKP sensor (POS), and Wiring Diagram for CMP sensor (PHASE).

OK or NG
1. INSPECTION END